Produção e qualidade física de batata-doce sob adubação fosfatada

Pablo Henrique de Almeida Oliveira; Welder de Araújo Rangel Lopes; Anna Kézia Soares de Oliveira; Gisele Lopes dos  Santos; Antonio Gideilson Correia da Silva; João Everthon da Silva Ribeiro; Lindomar Maria da Silveira; Aurélio Paes  Barros Júnior

doi:10.1590/1983-21252024v3711399rc

Authors

Pablo Henrique de Almeida Oliveira Department of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil https://orcid.org/0000-0001-9128-6179
Welder de Araújo Rangel Lopes Department of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil https://orcid.org/0000-0002-9380-6710
Anna Kézia Soares de Oliveira Department of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil https://orcid.org/0000-0001-7063-9991
Gisele Lopes dos Santos Department of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil https://orcid.org/0000-0002-1134-4672
Antonio Gideilson Correia da Silva Universidade Federal Rural do Semi-Árido - UFERSA https://orcid.org/0000-0002-6403-5507
João Everthon da Silva Ribeiro Department of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil https://orcid.org/0000-0002-1937-0066
Lindomar Maria da Silveira Department of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil https://orcid.org/0000-0001-9719-7417
Aurélio Paes Barros Júnior Department of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil https://orcid.org/0000-0002-6983-8245

DOI:

https://doi.org/10.1590/1983-21252024v3711399rc

Keywords:

Ipomoea batatas. Growing seasons. Yield. Commercial roots.

Abstract

Phosphorus (P) is a primordial mineral nutrient for plants, as it is directly linked to physiological and biochemical processes essential for plant maintenance, and can influence the production and final quality of the product. Furthermore, P favors good root development, which can benefit sweet potato crop. Thus, the objective of the work is to assess the influence of increasing doses of P on the production and physical quality of sweet potatoes in two growing seasons in a semi-arid environment. The experiments were carried out from April to August 2021 (season 1) and from December 2021 to April 2022 (season 2) at the Rafael Fernandes Experimental Farm - UFERSA, Mossoró, RN, BR. The design was randomized blocks, with four replications. The treatments consisted of five doses of P (0; 60; 120; 180 and 240 kg ha^-1 of P₂O₅) via fertigation and tested on the sweet potato cultivar Paraná. After harvesting the roots, the number and yield of roots (commercial, non-commercial and total), the average mass and the percentage of commercial roots were evaluated. Commercial roots were evaluated for firmness, elasticity and cooking time. The P doses influenced the production characteristics, mainly at the dose of 60 kg ha^-1 of P₂O₅, which promoted increases in the yield of commercial roots. The doses of P promoted the reduction of firmness for both growing seasons. A dose of 180 kg ha^-1 of P₂O₅ led to the shortest cooking time for the second growing season.

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